PostgreSQL is an innovative relational database control system, that you can use on a number of platforms (UNIX, Linux, FreeBSD, OpenSolaris, Windows) and with many different scripting languages (Perl, PHP, Python, Java, Ruby). Because it is open-source, it could be freely modified to suit the needs of any developer who works with it. PostgreSQL is also amongst the the most dependable and secure database systems, with significantly better efficiency in handling complex operations when compared with similar systems. It is well suited for large-scale applications due to the fact that a single PostgreSQL database does not have a limit for the size, while one table could be up to 32 Gigabytes. It is not a surprise that a lot of business, educational and government entities are already using PostgreSQL - Skype, the University of California, Berkeley and the US Department of Labor being only a couple of examples.